Water Pump Impeller with Key and Gasket – Fits Johnson/Evinrude 5.5-7.5 HP (Replaces 763735, 387361) family-yamaha-25mshz Remove the existing thermostat housing

Remove the existing thermostat housing and carefully extract the old thermostat and gaskets

Carefully remove the old lip seal from the pump housing

A: The best way is to check your engine's serial number and model against the "Compatible Engine Models" table

Remove the cotter pin from the propeller nut using pliers

Overheating can lead to serious engine damage

Water Pump Impeller with Key and Gasket – Fits Johnson/Evinrude 5.5-7.5 HP (Replaces 763735, 387361) family-yamaha-25mshz Remove the existing thermostat housingWater Pump Impeller with Key and Gasket Fits Johnson Evinrude 5. 5 7. 5 HP This water pump impeller kit is a direct replacement for Johnson Evinrude 5. 5 HP & 6 HP (19541979) and 7. 5 HP (19541958) outboard engines equipped with a metal pump housing. It is engineered to meet or exceed original equipment specifications for reliable cooling performance. It directly replaces Johnson Evinrude part numbers 763735, 0763735, 387361, 0387361, 777831, and